Hectopascals (hPa)	Inches of Water (inH₂O)
1 hPa	0.4015 inH₂O
2 hPa	0.8029 inH₂O
5 hPa	2.0073 inH₂O
10 hPa	4.0146 inH₂O
25 hPa	10.0366 inH₂O
50 hPa	20.0732 inH₂O
100 hPa	40.1463 inH₂O
250 hPa	100.3658 inH₂O
500 hPa	200.7315 inH₂O
1000 hPa	401.4631 inH₂O

Convert Hectopascals to Inches of Water

Convert hectopascals to inches of water (hPa to inH₂O) with our instant calculator. 1 hPa = 0.401463 inH₂O. Includes exact formula and reference tables.

How to Convert Hectopascals to Inches of Water (hPa to inH₂O)

1 Hectopascal (hPa) is equal to 0.401463 Inches of Water (inH₂O). Multiply the hectopascal value by 0.401463076

Quick Answer 1 hPa = 0.401463 inH₂O

Formula inH₂O = hPa × 0.401463076

Inverse Factor 1 inH₂O = 2.490889 hPa

Unit Definitions & Metrology Context

The SI unit of pressure is the pascal (Pa). Standard sea-level atmosphere is defined as 101,325 Pa (1.01325 bar or ~14.696 psi).

About Hectopascals (hPa): Hectopascal (hPa) is a unit in the Pressure measurement category. It is widely used in hectopascals (meteorology). Relative to the pressure base unit, 1 hPa equals 100 Pascals (Pa).

About Inches of Water (inH₂O): Inch of Water (inH₂O) is a unit in the Pressure measurement category. It is widely used in hvac duct & fan static pressure. Relative to the pressure base unit, 1 inH₂O equals 249.08891 Pascals (Pa).

Need to convert in the opposite direction? Visit our Convert Inches of Water to Hectopascals (inH₂O to hPa) calculator (1 inH₂O = 2.490889 hPa).

Step-by-Step Worked Examples (hPa to inH₂O)

Convert 5 Hectopascals to Inches of Water: Applying the formula (inH₂O = hPa × 0.401463076): starting with 5 hPa, multiply the hectopascal value by 0.401463076 to get 2.0073 inH₂O.
Convert 10 Hectopascals to Inches of Water: Applying the formula (inH₂O = hPa × 0.401463076): starting with 10 hPa, multiply the hectopascal value by 0.401463076 to get 4.0146 inH₂O.
Convert 50 Hectopascals to Inches of Water: Applying the formula (inH₂O = hPa × 0.401463076): starting with 50 hPa, multiply the hectopascal value by 0.401463076 to get 20.0732 inH₂O.

Popular Pressure Conversions

Pound per Square Inch ⇄ Bar

Multiply PSI by ~0.0689476 to convert to bar.

Bar ⇄ Pound per Square Inch

Multiply bar by ~14.5038 to find pressure in pounds per square inch (PSI).

Kilopascal ⇄ Pound per Square Inch

1 PSI equals approximately 6.89476 kilopascals (kPa).

Standard Atmosphere ⇄ Pound per Square Inch

1 standard atmosphere equals approximately 14.6959 PSI.

Frequently Asked Questions

Verified answers and formulas for converting hectopascals to inches of water.

How many inches of water are in 1 hectopascal?

There are 0.401463 inches of water (inH₂O) in 1 hectopascal (hPa). Conversely, 1 inch of water equals 2.490889 hectopascals.

How do you convert hectopascals to inches of water?

To convert hectopascals (hPa) to inches of water (inH₂O), use the formula: inH₂O = hPa × 0.401463076. Multiply the hectopascal value by 0.401463076. For example, 10 hPa equals 4.0146 inH₂O.

How do I convert back from inches of water to hectopascals?

To convert in the reverse direction from inches of water (inH₂O) to hectopascals (hPa), use the inverse formula: hPa = inH₂O × 2.4908891. Multiply the inch of water value by 2.4908891 (1 inH₂O = 2.490889 hPa).

What is the difference between hectopascal (hPa) and inch of water (inH₂O)?

Both hectopascal and inch of water measure pressure. Hectopascal (hPa) is a unit in the Pressure measurement category. It is widely used in hectopascals (meteorology). Relative to the pressure base unit, 1 hPa equals 100 Pascals (Pa). Inch of Water (inH₂O) is a unit in the Pressure measurement category. It is widely used in hvac duct & fan static pressure. Relative to the pressure base unit, 1 inH₂O equals 249.08891 Pascals (Pa).

How many PSI is in 1 bar?

1 bar equals approximately 14.5038 PSI. For car tires, 2.2 bar is roughly 32 PSI.